[meteorite-list] Opinion - Purple in a Meteorite

From: Jeff Kuyken <info_at_meteoritecentral.com>
Date: Fri Sep 30 05:19:48 2005
Message-ID: <00d701c5c5a0$19c7a240$f9578b90_at_mandin4f89ypwu>

Very cool Pete. I really like those unusual inclusions you find in a
meteorite every now and then. It reminds me a bit of a (Troilite?) metal
inclusion in my NWA 3119 slice. It's a lot larger and has a distinctive
colour to it but definitely not as bright as yours.

http://www.meteorites.com.au/features/nwa3119.html

Cheers,

Jeff Kuyken
I.M.C.A. #3085
www.meteorites.com.au


----- Original Message -----
From: Pete Pete
To: meteorite-list_at_meteoritecentral.com
Sent: Friday, September 30, 2005 2:01 PM
Subject: [meteorite-list] Opinion - Purple in a Meteorite




Hello, all,

I've mentioned before that my interest in meteorites is new, and have just
started collecting.

I've enjoyed buying quantities of (very affordable) Unclassified NWA's from
some fellow list members, then cutting, polishing, and spending hours
looking at them through my recently acquired stereoscope microscope. A whole
new appreciation for chondrules when they're in 3-D!

Getting to the point; one stone I recently cut, and polished down to a 400
grit wet sand cloth, then examined through the microscope, revealed that one
metallic area (troilite?) has a cavity, and in the cavity is a very vibrant
purple to navy blue substance.

http://pskills.onfinite.com/album/185698/628054/

http://pskills.onfinite.com/album/185698/628055/

The only information I've turned up on the internet thus far indicates that
sodium chloride in meteorites is purple and blue, but it's been found just
in the matrix.

Is it more likely that this substance is some type of oxide that formed in a
manner similar to a geode?
I can't imagine salt forming or surviving inside a metallic area like this.

I have some more close-up pics in hi-res , if required.


Cheers,
Pete


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Received on Fri 30 Sep 2005 05:19:42 AM PDT